Pentair Mechanical Seal Kit | Boost-Rite & HydroBoost Booster Pumps | ZBR43920
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- Backordered: contact us for ETA
- SKU:
- ZBR43920
-
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About This Item
The Pentair Mechanical Seal Kit (ZBR43920) is the OEM replacement seal kit for the Boost-Rite and HydroBoost booster pump lines, restoring the pump's internal water-tight integrity at the shaft interface.
⚠️ IMPORTANT: KIT LISTING — MULTIPLE COMPONENTS INCLUDED
This listing is a kit, not a single seal. All components required for a complete mechanical seal service are included in one package.
The mechanical seal prevents water from migrating along the pump shaft into the motor housing. When the seal wears or fails, water intrusion causes bearing damage and premature motor failure. Replacing the complete seal kit — rather than individual components — ensures all mating surfaces are renewed simultaneously and restores the original sealing performance.
Specifications
| Pentair Part Number | ZBR43920 |
| Part Type | Mechanical Seal Kit |
| Quantity Included | Kit |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair | Boost-Rite Booster Pump | BOOST-RITE | 1 kit required per pump |
| Pentair | HydroBoost Booster Pump | HYDROBOOST | 1 kit required per pump |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
Mechanical seal failure typically presents as water weeping from the underside of the pump body near the shaft. When servicing the seal, inspect the shaft sleeve for scoring or pitting — a damaged sleeve will cause the new seal to fail prematurely. Replace the sleeve if any wear is evident before installing this kit.
